Like Ctrl-Alt-Delete, but for your Blackberry.

Alt-Cap-Backspace (some may have to do it twice in a row) is what’s called a “soft reboot”. If you’ve ever had your Blackberry hang or just take forever to do something, give this a go. The other option is to pull out the battery.

Now Alt-Cap-Backspace may work for some, others may have to do it once, which will reset the screen (and it goes black); then when something appears on your screen again hit Alt-Cap-Backspace again.